<template>
    <div class="icons">
      <swiper ref="mySwiper" :options="swiperOptions">
        <swiper-slide v-for="(page, index) in pages" :key="index">
          <div class="icon" v-for="item in page" :key="item.id">
            <div class="icon-img">
              <img class="icon-img-content" :src="item.imgUrl">
            </div>
            <p class="icon-desc">{{item.desc}}</p>
          </div>
        </swiper-slide>
      </swiper>
    </div>
</template>

<script>
export default {
  name: 'HomeIcons',
  props: {
    iconList: Array
  },
  data () {
    return {
      swiperOptions: {
      }
    }
  },
  computed: {
    pages () {
      const pages = []
      this.iconList.forEach((item, index) => {
        // Math.floor() 返回小于或等于一个给定数字的最大整数。
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    }
  }
}
</script>

<style scoped lang="stylus">
  @import "~@styles/varibles.styl"
  @import "~@styles/mixins.styl"
  .icons >>> .swiper-container
    height 0
    padding-bottom 50%
  .icon
    overflow hidden
    float left
    width 25%
    padding-bottom 25%
    position relative
    .icon-img
      text-align center
      position: absolute
      top 0
      left 0
      right 0
      bottom .44rem
      /*box-sizing 取值content-box（默认）|border-box|inherit（继承父元素）;  border-box边框及内边距都是盒子的width数值 */
      box-sizing border-box
      padding .1rem
      .icon-img-content
        height 100%
    .icon-desc
      position absolute
      bottom 0
      left 0
      right 0
      line-height .44rem
      height .44rem
      color $darkTextColor
      text-align center
      /*封装了css样式*/
      ellipsis()
</style>
